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Why though. a single PCIe lane can do fine with gigabit ethernet, why would gigabit wifi be different? The PCIe does not care about the medium.

But anyway.

Best theoretical max of the wifi 6 spec with the best protocol and frequency is 1200 Mbit/s, which is 150 MB/s. I highly doubt you can get anywhere near half that in real life but whatever.

m-pcie has a single lane of PCIe 1.0 (usually, it could theoretically have any PCIe revision but for some reason I always see them locked at the 1.0), which provides up to 250 MB/s up and 250 MB/s down at the same time, and it's a pretty efficient bus with low overhead so you are getting close to that in practice.

M.2 key A/E has 2 lanes of PCIe 2.0 (or better), which is something like complete fucking overkill, 1GB/s up and down at the same time.

Comment

Why though. a single PCIe lane can do fine with gigabit ethernet, why would gigabit wifi be different? The PCIe does not care about the medium.

But anyway.

Best theoretical max of the wifi 6 spec with the best protocol and frequency is 1200 Mbit/s, which is 150 MB/s. I highly doubt you can get anywhere near half that in real life but whatever.

m-pcie has a single lane of PCIe 1.0 (usually, it could theoretically have any PCIe revision but for some reason I always see them locked at the 1.0), which provides up to 250 MB/s up and 250 MB/s down at the same time, and it's a pretty efficient bus with low overhead so you are getting close to that in practice.

M.2 key A/E has 2 lanes of PCIe 2.0 (or better), which is something like complete fucking overkill, 1GB/s up and down at the same time.